INDIGOFERA TINCTORIA LEAF [INDIGOFERA TINCTORIA LEAF ]
Indigo leaf, also called indigo or Indigofera tinctoria, is used in powder form. The dyeing properties of indigo powder are due to glucosides which release colour precursors when the powder comes into contact with water. After penetrating the hair, they transform into colouring principles. Treated with an indigo poultice, the hair gradually takes on a violet-blue colour in the days following application. It is used in vegetable dyes.
